US PATENT SUBCLASS 219 / 86.9
.~.~.~ For one-face welding

Current as of: June, 1999
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219 /   HD   ELECTRIC HEATING

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
78.01  DF  .~ For bonding with pressure (e.g., resistance welding) {16}
86.1  DF  .~.~ By spot bonding {12}
86.9.~.~.~ For one-face welding

DEFINITION

Classification: 219/86.9

For one-face welding:

(under subclass 86.1) Subject matter wherein all electrical welding contact is applied to one side of the work.